Side bearing



l niull l IIIIIIIIIII AAAAAAAAAAA FILED OCT 29,1919.

1,342,101. meneame 1.i 1920.

iai-Qf--i- 17 UNITED STATES PATENT OFFICE.

CHARLES E. DATII, or CHICAGO, ILLINOIS, AssIGNon To WILLIAM II. MINER, or cHAzY, NEW YORK.

SIDE BEARING.

Specification of Letters Patent.

Application led October 29, 1919. Serial No. 334,159.

To all whom t may concern:

Be it known that I, CHARLES E. DATI-I, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Side Bearings, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to improvements In side bearings. v

One of the objects of the invention 1s to provide a side bearing for railway cars which is efficient in operation, strong, durable, automatically self-centering and comprised of few parts.

More specifically, the object of the invention is to provide a side bearing for railway cars which is exceedingly inexpensive in original manufacture and wherein the cost of assembling is reduced to a minimum.

In the drawing forming a part of this specification, Figure 1 is a Vertical sectional view taken parallel to the center line of the car showing my improvementsv applied between the body and truck bolsters of the car. And Fig. 2 is a vertical sectional view taken substantially on the line 2-2 of Fig. 1.

In said drawing, 10 denotes the under side of a railway car body bolster and 11 the upper side of a truck bolster. The improved bearing is shown attached to the truck bolster. s shown, the improvedA bearing comprises, broadly, a retaining member A, an anti-friction element B, a wear plate C and a retaining pin D.

The retaining member or base casting A is of hollow substantially boX-lilre form and has upstanding parallel side walls 12-12, upstanding parallel end walls 13-13, a bottom wall 14: and perforated corner lugs 15, by which it is adapted to be riveted or otherwise secured to the bolster. At its ends, the member A may be provided with openings, as indicated at 16-16, in order to permit dirt and other foreign matter to be washed out.

The anti-friction element B, as shown, is in the form of a rocker of generally triangular form. It is provided with an upper arcuate bearing surface 17 of relatively short radius, the same being concentric with the lower bearing surface 18 of longer radius. Similarly, the element B is provided with two more sets of concentric surfaces 117 and 118; and 217 and 21S. With the anti-friction element constructed as shown, it is evident that, within the limits of movements provided for, the distance between the lines of bearing Contact at the top and bottoni will remain uniform, and, further, the element B will be automatically returned to its central normal position under the influence of gravity.

In order to reduce wear to a minimum and keep the cost of manufacture of the base casting A as low as possible, the hardened preferably steel plate C is employed, the latter having perforations 19--19 through which extend rounded bosses or teeth 20*20 formed integrally with the member A. The teeth 20 are extended an appreciable distance above the top surface of the plate C and coperate with corresponding recesses 21-21 formed in the lower side of the element B. By this method, it is evident that the element B cannot be shifted bodily out of its proper relation with the Aretaining member A. The sides of the element B and the spacing between the end walls 13 of the base casting A are properly proportioned so as to permit the element B the desired amount of travel, approximately two to two and one-half inches either side of normal, the element B being limited in its movements by the end walls 13.

I provide the following means for hold ing the parts in assembled relation: The side walls 12 of the base casting A are provided with elongated slots 22v22 which are curved slightly upward. The anti-friction element B, which is preferably in the form of a casting, is made with an opening or bore 23 located at the center of the element B and extending substantially coincident with the axis thereof. In actual practice, the bore 28 will be made irregular and not perfectly straight. This condition is clearly illustrated in Fig. 2, where it will be noted that the bore 23 is higher at the center, as indicated at 24, than it is at either end. The pin D is made from any suitable round rod material and is driven into the bore 23 through one of the slots 22. The pin D is made originally perfectly straight and as it is driven through the element B it will obviously be distorted to the condition shown most clearly in Fig 2. The pin D is driven le-I until both ends thereof are le'lt extended beyond the corresponding ends oi the ele ment B and Within the slots 22. rlhe pin D is thus driven and frictionally held Within the anti-friction element B and cannot be removed except by considerable effort. Obviously, the anti-friction element B is held against removal from the base casting A, although it is free to roll or rock back and forth Within the limits prescribed. It Will also be noted that the pin D not only holds the anti-friction element l?) in place but the latter will in turn hold the plate C against removal since the plate C cannot be taken out Withoutiirst removing the anti-friction element B.

lVith the construction described, it is evident that the anti-friction element l and the base casting A can be manufactured at comparatively small expense in the forni of ordinary castings. The plate C can be formed from commercially rolled steel and requires only to be punched to accommodate the teeth 20. rIhe parts are very quickly assembled and when the pin D is driven home, the parts cannot be separated and the bearing is ready for shipment and application. The entire construction presents a side bearing of unusual simplicity and one that is relatively inexpensive to manufacture, and wherein the labor cost is reduced to a minimum.

Although I have herein shown and described What I noW consider the preferred manner of carrying out the invention, the saine is merely illustrative, and I contemplate all changes and modifications that come Within the scope of the claims appended hereto.

I claim:

l. In a side bearing for railway cars, the

combination with a retainingv member adapted to be secured to a bolster and provided vvith opposedside Walls having elonu gated slots therein, of an anti-friction element movable back and forth in a direction parallel to said slotted Walls and provided with a substantially axially extending bore, and a d 1iven pin irictionally held in and extending through said bore with the ents thereof extended beyond the corresponding ends of the anti-friction element into the corresponding adjacent slots oit the Walls et the retaining` member to thereby prevent accidental removal et the anti-friction element from the retaining member, the forms of said bore and pin, bei'ore assembly, being` such that relatively slight deformation oit' the pin is produced as it is driven into place.

2. In a side bearing Jfor railway cars, the Combination With a hollow substantially box-like base casting adapted to be secured to a bolster and having end Walls, slotted side Walls, and a bottom Wall, the latter having teeth extending toward the interior oic the base casting, of a perforated Wear plate litting over said teeth and of thickness less than the height of said teeth, an anti-friction element having sockets cooperable with said teeth to prevent bodily shitting of said element with respect 'to the base casting, and a relatively slight distorted rictionally-held pin extending through the anti-friction element, the ends ot said pin being disposed Within said slots et the said Walls.

In Witness that I claim the foregoing I have hereunto subscribed my name this 10th day ot Ust., 1919.

nari-i., 

